Eaton MP-3000 Instruction Leaflet page 88

IM02602002E
Display
PH REVRS
T BYPASS
INCOM
STEX MMM
STEX X
TBS MMM
TRANSIT
Page 12-6
MP-3000
Table 12.2 Trip Conditions.
Complete help Message
PHASE REVERSAL TRIP
TRIP BYPASS
INCOM REMOTE TRIP
MAX NUMBER OF STARTS
PER TIME REACHED, RE-
MAINING MINUTES ACTIVE
SHOWN
STARTS PER TIME TRIP
(log display only)
TIME BETWEEN STARTS
TRIP, REMAINING ACTIVE
MINUTES SHOWN
LOW TO HIGH VOLTAGE
TRANSITION ERROR TRIP
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Probable Cause
At the time of starting,
the phase sequence was
reversed.
The MP-3000 is set for non-
reversing starter; the motor
is never supposed to run
backwards.
The MP-3000 tripped, yet
continued to sense current
flowing to the motor for more
than a second after the trip.
A remote PowerNet or other
data communications host
requested a motor trip.
Too many starts were per-
formed in the User-set period
of time.
Restarting is blocked until the
User-set time between starts
has expired.
Starting current was still
above the transition thresh-
old P5L5 when the transition
timer P5L6 delay expired.
Solution
DaNGER: Careless diagnosis
and correction could lead to
starting the motor in the wrong
direction. The causes are:
• An incoming source has
swapped phases. Swap two
of the incoming power leads
L1, L2, or L3 to correct the
condition.
• CT wiring has swapped
phases. Check the wiring
at the CT and relay end.
Change the MP-3000 current
transformer wiring by swap-
ping the current transformer
wiring terminals H1B-H2B with
H1C-H2C.
• Clearly mark the new wiring,
and update the drawings for
future reference.
• Check the motor for the cor-
rect direction of rotation at the
moment of starting.
• The contactor or breaker is
stuck or jammed.
• Or, the trip contact has been
bypassed so that the contac-
tor remained energized after
the trip.
• Immediately open the up-
stream source breaker or
loadbreak switch. Lock out
this switch and diagnose the
problem or find the bypass in
the starter.
Determine the cause of the
remote trip.
Wait for the oldest start to clear
from the stack. Observe the
countdown on the display. Refer
to settings P5L1 and P5L2.
Wait the indicated time before
restarting. NOTE: The number
of cold starts (NOCS) setting
may suppress this blocking dur-
ing the first 'n' cold starts.
• This trip is initiated only if
setting P5L7 is set to TRN I or
TRN T/C. Check the correct-
ness of transition settings.
• Check motor and load for a
cause of slower than expect-
ed acceleration.